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11.发明授权公开(公告)号：US09948472B2
公开(公告)日：2018-04-17
申请号：US14580185
申请日：2014-12-22
Applicant: Juniper Networks, Inc.
Inventor： John E. Drake , Zhaohui Zhang , Wen Lin , Tapraj Singh
IPC: G06F15/173 , H04L12/18 , H04L12/46 , H04L12/761
CPC classification number: H04L12/18 , H04L12/1886 , H04L12/4641 , H04L12/4654 , H04L45/16
Abstract: Techniques are described for utilizing Protocol Independent Multicast Sparse Mode (PIM-SM) to transport BUM (broadcast, unknown unicast, and multicast) traffic in a Virtual Extensible LAN (VXLAN) underlay of a data center, where the BUM traffic is received on active-active, multi-homed Ethernet virtual private network (EVPN) interconnects between multiple physical data centers. For example, the techniques may readily be applied to support usage of PIM-SM where provider edge (PE) routers of the EVPN operate as gateways between the EVPN and the VXLAN spanning the data center interconnect.
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12.发明授权公开(公告)号：US09602294B1
公开(公告)日：2017-03-21
申请号：US14042633
申请日：2013-09-30
Applicant: Juniper Networks, Inc.
Inventor： Zhaohui Zhang , Kurt J. Windisch , Jaroslaw Adam Gralak
IPC: H04L12/18
CPC classification number: H04L12/18 , H04L12/1868 , H04L12/1877
Abstract: Techniques provide rendezvous point link (RPL) resiliency for bidirectional protocol independent multicast (PIM-BIDIR) in a computer network. According to the techniques, when two or more RPL partitions have a same RPL subnet, routers on the RPL subnet are configured to elect an active RPL partition that will function as a RPL. The routers on any inactive RPL partitions may then treat the inactive RPL partitions as regular links in the RPL subnet and build a route to the active RPL partition. In some examples, the network is configured to include the two or more RPL partitions with the same RPL subnet as Anycast RPLs in the network. In other examples, the routers on the RPL subnet are configured to detect when an original RPL is separated into the two or more RPL partitions due to a failure of the original RPL.
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公开(公告)号：US12218835B2
公开(公告)日：2025-02-04
申请号：US17090621
申请日：2020-11-05
Applicant: Juniper Networks, Inc.
Inventor： Zhaohui Zhang , Jeffrey Haas , Srihari Ramachandra Sangli , Shraddha Hegde
Abstract: Techniques are described by which a routing protocol, such as border gateway protocol (BGP), is extended to control propagation and importation of information using route targets (RTs) specified as bitmasks that encode link administrative group information. For example, a network control device (e.g., controller) is configured to allocate one or more subset of resources (e.g., nodes or links) of an underlay network to each of one or more virtual networks established over the underlay network. The controller generates a bitmask encoded with link administrative group information of the one or more links. The controller then outputs, to a plurality of provider edge (PE) routers that are participating in a respective virtual network, a routing protocol message to advertise the one or more subset of resources, wherein the routing protocol message includes a route target specified as the bitmask.
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公开(公告)号：US11777847B1
公开(公告)日：2023-10-03
申请号：US17100602
申请日：2020-11-20
Applicant: Juniper Networks, Inc.
Inventor： Yimin Shen , Zhaohui Zhang , Alexander Arseniev , Ronald Bonica
IPC: H04L45/00 , H04L45/16 , H04L69/22 , H04L45/50 , H04L101/659
CPC classification number: H04L45/566 , H04L45/16 , H04L45/50 , H04L69/22 , H04L2101/659
Abstract: A network node may receive a packet that originated from a root network node and may process the packet to determine segment identifier (SID) information associated with a point-to-multipoint transport chain. The network node may determine, based on the SID information, that the network node is a transit leaf node in the point-to-multipoint transport chain. The network node may generate, based on determining that the network node is a transit leaf node in the point-to-multipoint transport chain, a copy of the packet and may process the copy of the packet to perform one or more actions. The network node may update, based on determining that the network node is a transit leaf node in the point-to-multipoint transport chain, the SID information and may send, after updating the SID information, the packet, with the updated SID information, to another network node.
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公开(公告)号：US20230155762A1
公开(公告)日：2023-05-18
申请号：US17657582
申请日：2022-03-31
Applicant: Juniper Networks, Inc.
Inventor： Zhaohui Zhang , Constantine Dimitrios-Polychronopoulos , Arda Akman
CPC classification number: H04L5/0048 , H04L5/0064 , H04W8/04 , H04W28/0263
Abstract: In an example, a method comprises executing, by an access network user plane function (ANUP) for a mobile network, an access network protocol to implement a connection with a user equipment (UE); implementing, by the ANUP, based on session data received from a control plane function of a mobile core network for the mobile network, an interface with a data network; and routing or switching, by the ANUP, packets between the connection with the UE and the interface with the data network.
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Patent Agency Ranking
公开(公告)号：US20210367883A1
公开(公告)日：2021-11-25
申请号：US17090621
申请日：2020-11-05
Applicant: Juniper Networks, Inc.
Inventor： Zhaohui Zhang , Jeffrey Haas , Srihari Ramachandra Sangli , Shraddha Hegde
IPC: H04L12/715 , H04L12/751
Abstract: Techniques are described by which a routing protocol, such as border gateway protocol (BGP), is extended to control propagation and importation of information using route targets (RTs) specified as bitmasks that encode link administrative group information. For example, a network control device (e.g., controller) is configured to allocate one or more subset of resources (e.g., nodes or links) of an underlay network to each of one or more virtual networks established over the underlay network. The controller generates a bitmask encoded with link administrative group information of the one or more links. The controller then outputs, to a plurality of provider edge (PE) routers that are participating in a respective virtual network, a routing protocol message to advertise the one or more subset of resources, wherein the routing protocol message includes a route target specified as the bitmask.
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公开(公告)号：US10536285B2
公开(公告)日：2020-01-14
申请号：US15880370
申请日：2018-01-25
Applicant: Juniper Networks, Inc.
Inventor： Vikram Nagarajan , Zhaohui Zhang , Princy T. Elizabeth , Ragupathi J
IPC: H04L12/18 , H04L12/46 , H04L29/08 , H04L12/721
Abstract: In some examples, a method includes receiving, by a first provider edge (PE) device of a layer 3 network, configuration data configuring the PE device to provide, via an Ethernet segment with an edge device, active-active multi-homing layer 2 (L2) virtual bridge connectivity to the edge device using an Ethernet Virtual Private Network (EVPN) instance; receiving, by the first PE device, a multicast Join message for multicast traffic, the multicast Join message identifying a second PE device that also participates in the EVPN instance; processing, by the first PE device, the multicast Join message to generate multicast forwarding state; and forwarding, by the first PE device based at least on the multicast forwarding state, the multicast traffic.
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18.发明授权公开(公告)号：US12120022B1
公开(公告)日：2024-10-15
申请号：US17932532
申请日：2022-09-15
Applicant: Juniper Networks, Inc.
Inventor： Shijo Thomas , Zhaohui Zhang
IPC: H04L45/00 , H04L45/42 , H04L45/745
CPC classification number: H04L45/566 , H04L45/42 , H04L45/745
Abstract: In some implementations, a network device may receive one or more packets via an incoming interface of the network device. The network device may forward, or refraining from forwarding, based on a destination address associated with the one or more packets and the incoming interface of the network device, the one or more packets. The network device may receive, prior to receiving the one or more packets, route information indicating the destination address, and at least one of a set of one or more authorized incoming interfaces of the network device or a set of one or more authorized identifiers that are associated with the destination address and may save the route information in an entry of a data structure. Forwarding, or refraining from forwarding, the one or more packets may further be based on the entry of the data structure.
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公开(公告)号：US20240250789A1
公开(公告)日：2024-07-25
申请号：US18626265
申请日：2024-04-03
Applicant: Juniper Networks, Inc.
Inventor： Zhaohui Zhang , Constantine Dimitrios-Polychronopoulos , Arda Akman
CPC classification number: H04L5/0048 , H04L5/0064 , H04W8/04 , H04W28/0263
Abstract: In an example, a method comprises executing, by an access network user plane function (ANUP) for a mobile network, an access network protocol to implement a connection with a user equipment (UE); implementing, by the ANUP, based on session data received from a control plane function of a mobile core network for the mobile network, an interface with a data network; and routing or switching, by the ANUP, packets between the connection with the UE and the interface with the data network.
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公开(公告)号：US20240224158A1
公开(公告)日：2024-07-04
申请号：US18343248
申请日：2023-06-28
Applicant: Juniper Networks, Inc.
Inventor： Zhaohui Zhang , Arda Akman , Constantine Dimitrios Polychronopoulos
CPC classification number: H04W40/28 , H04L45/566 , H04L45/74
Abstract: In general, techniques are described for extending Mobile User Plane-Gateway architecture Border Gateway Protocol (BGP) signaling to an integrated Access Network-User Plane (ANUP) function in mobile networks. In an example, a method comprises receiving, by a computing system, a routing protocol message comprising second tunnel information for a packet data unit (PDU) session for a User Equipment (UE) and comprising data indicating a routing instance or a UE address for the User Equipment; by the computing system, based on matching the second tunnel information with first tunnel information sent or received on an interface with a mobile network control plane function, generating forwarding information to map the UE address to the PDU session or to map the PDU session to the routing instance; and based on the forwarding information, outputting, by the computing system, a packet associated with the PDU session.
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